Without hard work, nothing grows but weeds.
Problems are not stop signs, they are guidelines.
Be gentle to all and stern with yourself.
Know or listen to those who know.
Do not weep do not wax indignant. Understand.
By failing to prepare, you are preparing to fail.
Only the educated are free.
It's always too early to quit.
Never complain and never explain.
After a storm comes a calm.
If God has made the world a perfect mechanism, He has at least conceded so much to our imperfect intellect that in order to predict little parts of it, we need not solve innumerable differential equations, but can use dice with fair success.