We have found that where science has progressed the farthest, the mind has but regained from nature that which the mind put into nature.
Do not accustom yourself to consider debt only as an inconvenience; you will find it a calamity.
The true measure of a man is how he treats someone who can do him absolutely no good.
Curiosity is one of the most permanent and certain characteristics of a vigorous intellect.
He who has so little knowledge of human nature as to seek happiness by changing anything but his own disposition will waste his life in fruitless efforts.
Our aspirations are our possibilities.
Exert your talents, and distinguish yourself, and don't think of retiring from the world, until the world will be sorry that you retire.
I do not yet know why plants come out of the land or float in streams, or creep on rocks or roll from the sea. I am entranced by the mystery of them and absorbed by their variety and kinds. Everywhere, they are visible yet everywhere occult.
I am a realist. I expect miracles.
Most attorneys practice law because it gives them a grand and glorious feeling. You give them a grand - and they feel glorious.
Compounds of gaseous substances with each other are always formed in very simple ratios, so that representing one of the terms by unity, the other is 1, 2, or at most 3. . . The apparent contraction of volume suffered by gas on combination is also very simply related to the volume of one of them.