I can, therefore I am.
It's always too early to quit.
If you can dream it, you can do it.
Who seeks shall find.
The wise does at once what the fool does at last.
The dog that trots about finds a bone.
Leap, and the net will appear.
You never know what motivates you.
Expect problems and eat them for breakfast.
By failing to prepare, you are preparing to fail.
Famous remarks are very seldom quoted correctly.