Lang's teacher gave a piece of paper to Lang and said to him, "Three good quotes are written here. But you have to achieve them through some difficulties". The following was written in the paper:
(a) CAJEQO EO KJA LANYAJP EJOLENWPEKJ WJZ JEJAPU-JEJA LANYAJP LANOLENWPEKJ.
(b) ZIQQHUV QHYHU TXLW DQG TXLWWHUV QHYHU ZLQ.
(c) NRFLNSFYNTS NX RTWJ NRUTWYFSY YMFS PSTBQJILJ.
Can you find the quotes?
Note: The problem is taken from the book Neurone Onuronon by Muhammad Zafar Iqbal. I don't have any solution to the problem. Thinking mathematically might help as the book is on mathematical puzzles.