The wise does at once what the fool does at last.
To know oneself, one should assert oneself.
Who seeks shall find.
Be gentle to all and stern with yourself.
By failing to prepare, you are preparing to fail.
Expect problems and eat them for breakfast.
Do not weep do not wax indignant. Understand.
Only the educated are free.
Wherever you are - be all there.
If you think you can do it, you can.
If you decide to design your own language, there are thousands of sort of amateur language designer pitfalls.