We can believe what we choose. We are answerable for what we choose to believe.

If we insist on being as sure as is conceivable... we must be content to creep along the ground, and never soar.

We mourn the blossoms of May because they are to wither; but we know that May is one day to have its revenge upon November, by the revolution of that solemn circle which never stops-- which teaches us in our height of hope, ever to be sober, and in our depths of desolation, never to despair.

Without self-knowledge you have no root in yourselves personally; you may endure for a time, but under affliction or persecution your faith will not last. This is why many in this age (and in every age) become infidels, heretics, schismatics, disloyal despisers of the Church. They cast off the form of truth, because it never has been to them more than a form. They endure not, because they never have tasted that the Lord is gracious; and they never have had experience of His power and love, because they have never known their own weakness and need.

From My Life's Work by Cardinal Newman

God has created me to do Him some definite service. He has committed some work to me which He has not committed to another. I have my mission. I may never know it in this life, but I shall be told it in the next...I shall do good. I shall do His work if I do but keep His commandments and serve Him in my calling.

Therefore I will trust Him. Whatever, wherever I am. I can never be thrown away. If I am in sickness, my sickness may serve Him, if I am in sorrow, my sorrow may serve Him. My sickness, or perplexity, or sorrow may be necessary causes of some great end, which is quite beyond us. He does nothing in vain.

A university training is the great ordinary means to a great but ordinary end; it aims at raising the intellectual tone of society…It is the education which gives a man a clear conscious view of his own opinions and judgments, a truth in developing them, an eloquence in expressing them and a force in urging them.