Almost all of our sorrows spring out of our relations with other people.

Anyone can squash a bug but all professors of this world couldn't build one.

What people commonly call Fate is, as a general rule, nothing but their own stupid and foolish conduct.

Human existence is an error...it is bad today and every day it gets worse, until the worst happens.

If at any moment Time stays his hand, it is only when we are delivered over to the miseries of boredom.

Everything that happens, happens of necessity.

A man's knowledge may be said to be mature, in other words, when it has reached the most complete state of perfection to which he, as an individual, is capable of bringing it, when an exact correspondence is established between the whole of his abstract ideas and the things he has actually perceived for himself. His will mean that each of his abstract ideas rests, directly or indirectly, upon a basis of observation, which alone endows it with any real value; and also that he is able to place every observation he makes under the right abstract idea which belongs to it.