Thinking rationally is often different from "positive thinking," in that it is a realistic assessment of the situation, with a view towards rectifying the problem if possible.
[T]he success of democracy depends, in the end, on the reliability of the judgments we citizens make, and hence upon our capacity and determination to weigh arguments and evidence rationally. - Irving M. Copi
And if ever you need encouragement, remember at least two sober facts which nobody can rationally deny: that you are a new and unique living force in nature, and that you can, by taking thought and pursuing it, become more and more intensely alive. - John Steeksma
Some people talk about illogical things like love.. But then they can rationally sacrifice their relatives. - Sebastian Michaelis - Yana Toboso
Rationally, factory farming is so obviously wrong, in so many ways. In all of my reading and conversations, I've yet to find a credible defense of it. But food is not rational. Food is culture, habit, and identity. - Jonathan Safran Foer
The meek shall indeed inherit the earth. They have the power to act rationally instead of reacting emotionally. - David M. Butcher
The whole art of politics consists in directing rationally the irrationalities of men. - Reinhold Niebuhr
Education should enable a student to think rationally, critically, and ultimately to understand, accept, and adapt with new and old ideas. - Debasish Mridha
Education gives you the power to think rationally, think better, and be productive in every act. - Debasish Mridha