Man, as a spiritual being, ...

Man, as a spiritual being, cannot be maintained in strength, uprightness, and peace except if he periodically withdraw himself from the outer world of perishable things and reach inwardly towards the abiding and imperishable realities.
Man, as a spiritual being, cannot be maintained in strength, uprightness, and peace except if he periodically withdraw himself from the outer world of perishable things and reach inwardly towards the abiding and imperishable realities.

More phrases

Don't settle in the land of barely enough. That is where you are, it is not who you are. That's your location, it's not your identity. No matter what it looks like, have an abundant mentality.
The by-product is that they more people you help, the "richer" you become, mentally, emotionally, spiritually, and definitely financially.
 T. Harv Eker
Happiness doesn't depend on any external conditions, it is governed by our mental attitude.
The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is.
To improve is to change; to be perfect is to change often.

Quotes from the same author

Men are anxious to improve their circumstances, but are unwilling to improve themselves; they therefore remain bound.
As a man thinketh in his heart, so shall he be
The greatest achievement was at first and for a time a dream. The oak sleeps in the acorn, the bird waits in the egg, and in the highest vision of the soul a waking angel stirs. Dreams are the seedlings of realities.
In all human affairs there are efforts, and there are results, and the strength of the effort is the measure of the result.
The vision that you glorify in your mind, the Ideal that you enthrone in your heart - this you will build your life by, this you will become.