Don't dissipate your powers; strive to concentrate them. Genius thinks it can do whatever it sees others doing, but it will surely repent of every ill-judged outlay.

Everyone only hears what he understands.

If the mass of people hesitate to act, strike with swiftly and with boldness, the brave heart that understands and seizes opportunity can everything.

I have always paid attention to the merits of my enemies, and found it an advantage.

The really unhappy person is the one who leaves undone what they can do, and starts doing what they don't understand; no wonder they come to grief.

Habit is the most imperious of all masters.

One should not search for anything behind the phenomena. They themselves are the message.