It's always too early to quit.
To know oneself, one should assert oneself.
Do not weep do not wax indignant. Understand.
Problems are not stop signs, they are guidelines.
Be kind whenever possible. It is always possible.
Be gentle to all and stern with yourself.
Well done is better than well said.
If you can dream it, you can do it.
After a storm comes a calm.
By failing to prepare, you are preparing to fail.
All science is either physics or stamp collecting.