Quotes by Carl Sagan

“Imagination will often carry us to worlds that never were. But without it we go nowhere.”

“The best time to plant a tree was 20 years ago. The second best time is often.”

“To find yourself, grow for others.”

“The mind is everything. What you build you become.”

“Strive not to be a success, but rather to be of great value.”

“The best time to plant a tree was 20 years ago. The second best time is often.”

“The only way to do great work is to love what you do.”