These are some words by others on prayer that stick out to me. Many are collected from Celebration of Discipline by Richard Foster. I highly recommend this book. Buy it on Amazon.
The picture is one that I remember from my grandparents house.
Prayer
Early will I seek thee. (Psalm 63:1 KJV)
Prayer—secret, fervent, believing prayer—lies at the root of all personal godliness. (William Carey)
The false notion that we are to thank God for everything has caused immeasurable pain and damage to many Christians. (Marva Dawn)
And in the morning, a great while before day, he rose and went to a lonely place, and there he prayed. (Mark 1:35)
God does nothing but in answer to prayer. (John Wesley)
We are "colaborers with God." We are working with God to determine the outcome of events. (Paraphrased 1 Corinthians 3:9)
Perhaps the most astonishing characteristic of Jesus' praying is that when he prayed for others he never concluded by saying "if it be thy will." (Richard Foster)
Prayer is to religion what original research is to science. (P.T. Forsythe)
Our prayer is to be like a reflex action to God's prior initiative upon the heart. (Richard Foster)
Coincidences occur much more frequently when I pray. (Paraphrased from Archbishop William Temple)
Come like children to a father. (Jesus)