To know oneself, one should assert oneself.

Without hard work, nothing grows but weeds.

The most effective way to do it, is to do it.

Know or listen to those who know.

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

If you're going through hell, keep going.

It's always too early to quit.

Problems are not stop signs, they are guidelines.

Quality is not an act, it is a habit.