Stand guard at the door of your mind.
The biggest reason people don't succeed is because they don't expose themselves to existing information.
One discipline always leads to another discipline.
The attitude of other people affects each of us and the attitude of each of us has the capacity to affect all of us.
Some people read so little they have rickets of the mind.
Let the views of others educate and inform you, but let your decisions be a product of your own conclusions.