No great man ever complains of want of opportunity.
The reward of a thing well done is having done it.
Do not go where the path may lead, go instead where there is no path and leave a trail.
Nature is a mutable cloud which is always and never the same.
Write it on your heart that every day is the best day in the year.
Without a rich heart, wealth is an ugly beggar.
Every man in his lifetime needs to thank his faults.
Science does not know its debt to imagination.
All I have seen teaches me to trust the creator for all I have not seen.
