Strike the dog dead, it's but a critic!

There is no trifling with nature; it is always true, grave, and severe; it is always in the light, and the faults and errors fall to our share. It defies incompetency, but reveals its secrets to the competent, the truthful, and the pure.

The thinker makes a great mistake when he asks after cause and effect. They both together make up the indivisible phenomenon.

The world is full of contradiction.

If you treat men the way they are you never improve them. If you treat them the way you want them to be, you do.

The philosophers must station themselves in the middle.

How circumscribed is woman's destiny!