“seeing with the eyes of another, listening with the ears of another, and feeling with the heart of another.”

“Follow your heart but take your brain with you.”

“To be a human being means to possess a feeling of inferiority which constantly presses towards its own conquest. The greater the feeling of inferiority that has been experienced, the more powerful is the urge for conquest and the more violent the emotional agitation.”

“It is easier to fight for one's principles than to live up to them.”

“The chief danger in life is that you may take too many precautions.”

“Trust only movement. Life happens at the level of events, not of words. Trust movement.”

“إن التقدم العلمي ما هو إلا نتيجة لسعي البشر الدائم لتحسين أحوالهم عن طريق معرفة المزيد عن الكون المحيط بهم وتطوير قدراتهم على التعامل معه.”