Quote by Francesco Petrarca

"Time is the substance I am made of."

"Nothing is so unbelievable that oratory cannot make it acceptable."

"Who is the happy man? He who has a healthy body, a resourceful mind, and a docile nature."

"Five enemies of peace inhabit with us: avarice, ambition, envy, anger, and pride."

"Science helps us understand the world."

"I've witnessed the birth of science, and it continues to amaze me."

"I'm something of a scientist myself."

"The fusion process is self-sustaining now!"