“Welcome to all those big, tough, complex problems. In them are your strongest opportunities.” Ralph Marston By E-MotivasyonDifferent Thinking Quotes, Personal Development Quotes, Positive Thinking Quotes0 comments ▶Dr. Tayfun Topaloğlu Youtube Instagram: @drtayfuntopaloglu “Welcome to all those big, tough, complex problems. In them are your strongest opportunities.” Ralph Marston