Fides Et Ratio

"Grace builds on nature" teaches us that there is often a process involved in the conversion of hearts and minds in achieving the ideals of the Christian life. Sloth can take over when we realize that this process is painful and long, and we'd prefer to reach that ideal like flipping a switch. Rigidity develops as a result of a lack of patience, whereby we become spiritual violent towards ourselves and others, discouraged and negative. Patience and tolerance are needed, but only as servants of the ideal, not enablers of the mediocre life.