Today's rebel is tomorrow's tyrant.
The laws of biology are the fundamental lessons of history.
A great civilization is not conquered from without until it has destroyed itself from within.
If you have character, endeavor, personality, courage and the capacity for concentrated labor, you will do what is your destiny – and, perhaps, even do it well.
No man who is in a hurry is quite civilised.
The conservative who resists change is as valuable as the radical who proposes it.