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Browse all 10,075 quotes or apply filters in different categories to narrow your search.
Critical thinking3 quotes
To doubt everything and to believe everything are two equally convenient solutions; each saves us from thinking. — Henri Poincare · 1902The man who has no tincture of philosophy goes through life imprisoned in the prejudices derived from common sense, from the habitual beliefs of his age or his nation, and from convictions which have grown up in his mind without the co-operation or consent of his deliberate reason. — Bertrand Russell · 1912I am convinced that everything that is worth while in the world has been accomplished by the free, inquiring, critical spirit, and that the preservation of this spirit is more important than any social system whatsoever. But the men of ritual and the men of barbarism are capable of shutting up the men of science and of silencing them forever. — Sinclair Lewis · 1935Credulity1 quote
To doubt everything and to believe everything are two equally convenient solutions; each saves us from thinking. — Henri Poincare · 1902Doubt and skepticism1 quote
To doubt everything and to believe everything are two equally convenient solutions; each saves us from thinking. — Henri Poincare · 1902Intellectual freedom1 quote
I am convinced that everything that is worth while in the world has been accomplished by the free, inquiring, critical spirit, and that the preservation of this spirit is more important than any social system whatsoever. But the men of ritual and the men of barbarism are capable of shutting up the men of science and of silencing them forever. — Sinclair Lewis · 1935Philosophy1 quote
The man who has no tincture of philosophy goes through life imprisoned in the prejudices derived from common sense, from the habitual beliefs of his age or his nation, and from convictions which have grown up in his mind without the co-operation or consent of his deliberate reason. — Bertrand Russell · 1912Progress1 quote
I am convinced that everything that is worth while in the world has been accomplished by the free, inquiring, critical spirit, and that the preservation of this spirit is more important than any social system whatsoever. But the men of ritual and the men of barbarism are capable of shutting up the men of science and of silencing them forever. — Sinclair Lewis · 1935Questioning one's beliefs1 quote
The man who has no tincture of philosophy goes through life imprisoned in the prejudices derived from common sense, from the habitual beliefs of his age or his nation, and from convictions which have grown up in his mind without the co-operation or consent of his deliberate reason. — Bertrand Russell · 1912Scientific progress1 quote
I am convinced that everything that is worth while in the world has been accomplished by the free, inquiring, critical spirit, and that the preservation of this spirit is more important than any social system whatsoever. But the men of ritual and the men of barbarism are capable of shutting up the men of science and of silencing them forever. — Sinclair Lewis · 1935