Be gentle to all and stern with yourself.

It's always too early to quit.

If you think you can do it, you can.

Without hard work, nothing grows but weeds.

You never know what motivates you.

Know or listen to those who know.

The wise does at once what the fool does at last.

Quality is not an act, it is a habit.

Do not weep do not wax indignant. Understand.