Quality is not an act, it is a habit.
Either you run the day or the day runs you.
It's always too early to quit.
Things do not happen. Things are made to happen.
What you do today can improve all your tomorrows.
The dog that trots about finds a bone.
Always desire to learn something useful.
The wise does at once what the fool does at last.
The most effective way to do it, is to do it.
Be gentle to all and stern with yourself.
I would say the most help I got was from my dad. My dad is a civil engineer in Switzerland he's 90 years old now, so he's no longer active as a civil engineer, but still a very active person.