The question of questions for mankind—the problem which underlies all others, and is more deeply interesting than any other—is the ascertainment of t… - Thomas Henry Huxley

Lamarck, sagacious as many of his views were, mingled them with so much that was crude and even absurd, as to neutralize the benefit which his originality might have effected had he been a more sober and cautious thinker...

Trust a witness in all matters in which neither his self-interest, his passions, his prejudices, nor the love of the marvellous is strongly concerned. When they are involved, require corroborative evidence in exact proportion to the contravention of probability by the thing testified.

The question of all questions for humanity, the problem which lies behind all others and is more interesting than any of them, is that the determination of man's place in Nature and his relation to the Cosmos.